roach



I (No Model.) 2 Sheets-Sheet 1.

C. H. ROAOH.

MACHINE FOR MAKING GLASS POTS.

No. 367,729. Patented Aug. 2, 1887.

M u: I M 12 ia iiiiiiiiiniifi illQ::iasiusiisusaq iegazimn ti l;

9 2 EM nm 5 f I i ll! WITNESSES INVENTQR BY CAJZA B-vdllnw ATTORNEY.

ERS. Ph'oloiilhographer. Wanhingior, 0.1;

(No Model.) 2 Sheets-Sheet 2.

C. H. ROAGH.

MACHINE FOR MAKING GLASS POTS.

No. 367,729.- Patented Aug. 2, 1887.

WITNESSES I INVENTOR I am w /7 lmdi w 6% flow BY I l3.-((aw ATTORNEY.

u. PETERS. Pm z-Likbogflphur. Wahrington. n. a

iug clay pots for glass-making, and is illus- UNITED STATES PATENTOFFICE.

CHARLES H. ROAGH, OF BALTIMORE, MARYLAND.

MACHINE FOR MAKING GLASS POTS.

SPECIFICATION forming part of Letters Patent No. 367,729, dated August2, 1887.

Application filed Marrh 2-1, 1887.

T0 aZZ whom, it may concern:

Be it known that 1, CHARLES H. Roxorr, acitizen of the United States,residing at Baltimore, in the State of Maryland, haveinvented certainnew and useful Improvements in Machines for Making Glass Pots, of whichthe following is a specification.

This invention relates to a machine for maktrated in the accompanyingdrawings, in Which Figure 1 is an elevation of the machine,showing themold and core in the first position. Fig. 2 is a top view of the mold,core, and rammer cross-head, and a horizontal section of the guides onthe line2 2. Fig. 3 is an elevation of the machine, showing thepitman-rod of the rammer shortened, and showing the flexible rammerbetween the mold and core. Fig. 4 is a top view of the flexible rammer.Fig. 5 is a partial side view of the core, showing one of the curvedguides for the rammer. Fig. 6 is a side view of part of theflexiblerammer.

The letter A designates a metal or wooden mold having an in nor flatbottom, from which the walls rise and flare, or incline outward. Thismold gives the outside shapeto the clay pot. A metal core, 13, hasexteriorly a shape corresponding to that of the mold, but is of smallersize. This core determines the shape and size of the inside of the claypot. The space 0 between the core and mold receives the clay c, whichforms the pot. The machine comprises a rammer cross-head, D,which firstpresses the core B into the clay placed into the bottom of the mold toform the clay-pot bottom, a flexible rammer, It, to ram the clay whichforms the sides of the clay pot, and mechanism to operate the saidrammer crosshead and flexible rammer.

Two standards, F, serve to support a crank shaft, G, which carries adrive-pulley, H, and vertical guides I are on the confronting sides ofsaid standards. Instead of a pulley at the end, the shaft G may have adrive-crank for turning it. An extensible pitmanrod, J, connects thepitman-crank G with the rammer cross-head D, which latter is movable upand down in the said vertical guides I. The crosshead D has flanges 7r,to which the core 13 is secured by bolts Z, or other suitable meanswhich will permit of its ready detachment.

Serial No. JR-2,950. (No model.)

Vhen the core is thus secured to the crosshcad, it will be carried upand down by the revolution of the crank-shaft. The pitmaurod J comprisestwo rods-one right and the other left screw threaded. One is attached tothe crank and the other to the cross-head, and the two are united by aturn-buckle, m,which takes on the screw-threads. It will thus be seenthe pitman-rod is extensible, and may be shortened or lengthened at willto meet the requirements of the clay filled into the mold A.

The rammer cross-head D carries a swiveled head, N. This head has on topa central pivotwrist, 0, which fits and turns in a hole at the underside of the ram mcr cross-head. By this means the head N hangs from thecrosshead, and while carried up and down is free to turn in a horizontalplane. The swiveled head N has four or more radial sockets, p, enteringat its rim. Each socket is occupied by an arm, g, which is retained inposition by a set-screw, 1-.

The flexible rammer E consists of two halfcireular rings of rubber. Atop view of the rammer is shown in Fig. 4 on alarger scale than thatseen in Fig. The halfrubber rings are heavy and thick, and arere-enforced on top by curved metal plates t, which have crossslots 11,and are seen red to the rubber by headed pins or bolts .9 in saidcross-slots, whereby the circular form of the rubber may contract orexpand to the extent of the length of cross-slot. The metal plates 1.are bowed up and overlap each other and comprise leaf-plate springs.Each half-ring is suspended from two of the arms g by hanger-rods 1),which are jointed by a hinge, q, to said arms. These jointed hangerrodsare necessary, in order to afford the required movement of the flexiblerammer, which moves up and down in the space 0 between the core andmold.

The tendency of the flexible half-rings of the rammer is to contract,and thereby they are adapted to fitthe smallest or lower part of thespace 0. Their flexibility allows them to expand as they move up to theupper and largest part of said space. The core B has at its top a numberof curved guides, 20, which project above the top rim. \Vhen theflexible rammer is drawn up and out of the space 0, it surrounds theseupward-proj ectiug guides, which prevent the said rammer fromcontracting and guide it on its descentjn the space 0.

In operation the flexible rammer moves up to clear the space a. Temperedclay is then placed in the spaeec and the rammer set in motion As itmoves up and down it may also be turned slowly by the operator placinghis hand on the swivcled head N and rotating it. Additional clay isadded from time to time and duly rammed, after each additional quantityis placed in, until the pot is finished. As each supply of clay isplaced in the space 0, the pitman-rod J must be shortened to corre spondwith the quantity of clay added.

Vhen thepot is finished, it is removed from the mold and placed in akiln to be burned, in the usual manner.

It is obvious that the desired result may be obtained without having thepitman-rod eX- tensible by provision for raising and lowering the moldand core, so as to change the position with. respect to the crank-shaft.

lhe flexible rammer may be made in two or more segments of rings.

Having described my invention, I claim and desire to secure by LettersPatentof the United States 1. In a machine for making clay pots, thecombination of a mold, A, a core, B, smaller than the mold and leaving aspace between, a

crank-shaft, a flexible rammer to work up and down in said space, and apitman-rod connecting the crankshaft and the flexible ram mer.

2. In a machine for making clay pots, the combination of mold A,a core,B, smaller than the mold and leaving a space between, a crankshaft, aflexible rammer to work up and down in said space, and a pitman-rodprovided with meansfor lengthening orshortening it, for the purpose setforth.

3. In a machine for making clay pots, the combination of a mold, A, acore, B, smaller than the mold and leaving a space between, and providedwith upward-projecting guides, a crank-shaft, a flexible rammerconsisting of part1 y-circular rings,a pitman-rod,and means,substantially as described, connecting the said flexible rammer with thepitman-rod.

4. In a machine for making clay pots, the combination of a mold, A, acore, B, smaller than the mold and leaving a space between, a

crank-shaft, a cross-head, D, a pitman-rod connecting crank-shaft andcross-head, a flexible rammer consisting of segments of rings, andjointed hanger-rods o, from which the flexible rammer is suspended.

5. In a machine for making clay pols, the

combination of a mold, A, a core, B, smaller CHARLES H. ROACH.

\Vilnesses:

JonN E. Monms, JNo. T. MADDoX.

